本文将逻辑函数修改技术用于任意进制同步计数器的综合,从而导出了任意进制同步加法计数器、减法计数器和可逆计数器使用T型触发器的设计公式。在此基础上提出了使用J-K触发器设计任意进制同步加法计数器、减法计数器和可逆计数器的方法。通过实例表明,公式设计法具有使用方便、设计迅速等优点和一定的实用意义。 In this paper, the logic function modification technique is applied to the synthesis of an arbitrary-scale synchronous counter, so as to derive the design formula of a T-type flip-flop for an arbitrary-scale synchronous addition counter, a subtraction counter and a reversible counter. On this basis, a method of designing an arbitrary-phase synchronous addition counter, a subtraction counter and an up-down counter using a J-K flip-flop is proposed. The example shows that the formula design method is easy to use, rapid design and other advantages and has some practical significance.